TECHNOLOGY

Some basic USSD codes for cellular operations

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Unstructured Supplementary Service Data (USSD) is a protocol used by GSM cellular telephones to communicate with the service provider’s computers. USSD can be used for WAP browsing, prepaid callback service, mobile-money services, location-based content services, menu-based information services, and as part of configuring the phone on the network.

However many of us do not know the underlying USSD codes behind some basic cellular operations, I endeavored to explain some of them below…..

Call Diverting:

For All Calls:
To Activate: * * 21 * NUMBER #
To Cancel: # # 21 #
To Check: * # 21 #

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No Answer:
To Activate: * * 61 * NUMBER #
To Cancel: # # 61 #
To Check: * # 61 #

Unreachable:
To Activate: * * 62 * NUMBER #
To Cancel: # # 62 #
To Check: * # 62 #

Busy:
To Activate: * * 67 * NUMBER #
To Cancel: # # 67 #
To Check: * # 67 #
To Cancel All Call Forwarding # # 002 #

Call Waiting:

To Activate: * 43 #
To Deactivate: # 43 #
To Check: * # 43 #

Call Barring:

All Calls:
To Activate: * 330 * BARRING CODE #
To Cancel: # 330 * BARRING CODE #
To Check: * # 330 #

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All Outgoing Calls:
To Activate: * 333 * BARRING CODE #
To Cancel: # 333 * BARRING CODE #
To Check: * # 333 #

All Incoming Calls:
To Activate: * 353 * BARRING CODE #
To Cancel: # 353 * BARRING CODE #
To Check: * # 353 #

All Outgoing Calls:
To Activate: * 33 * BARRING CODE#
To Cancel: # 33 * BARRING CODE #
To Check: * # 33 #

All Outgoing International Calls:
To Activate: * 331 * BARRING CODE#
To Cancel: # 331 * BARRING CODE #
To Check: * # 331 #

All Outgoing International Calls Except To Home Country:
To Activate: * 332 * BARRING CODE#
To Cancel: # 332 * BARRING CODE #
To Check: * # 332 #

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All Incoming Calls:
To Activate: * 35 * BARRING CODE #
To Cancel: # 35 * BARRING CODE #
To Check: * # 35 #

All Incoming Calls When Outside Home Country:
To Activate: * 351 * BARRING CODE #
To Cancel: # 351 * BARRING CODE #
To Check: * # 351 #

Canceling All Call Barring # 330 * BARRING CODE #

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